Two machine - 1 Client - 1 Server.
Client
1GB Ram
Locally installed copy of Progress Client Networking.
1 CPU
Server.
As a general rule, this is where the money goes!
As much much memory as you can afford.
As many spindles as you can squeeze into the chassis.
At least 2 CPUs.
Get as much network bandwidth between the two machines as you can, on as short a cable run as you can!
Tuning.
Take a close look at the -Mm parameter.
Make sure that your database buffer hit rate approches 99.5%
Look closely at -Mn, -Mi etc
Make sure that you specify -T to be on a local drive for both client and server.